i say screw peptides. too many places selling them now and really you don't know whats in them unless you get a lab test. i really think that you're better off with and have more luck getting real HGH and going on for 3 months. it will cost you more but it will be way more effective.
i have so much chronic pain and repeated injury that i can not and do not go the gym any more. i can barely walk up stairs, winged scapula, nerve impingement, knees, back, shoulders and neck feel like glass shards and rust, and most days i just want to stay in bed. i've been to every GP, specialist, natropath, chiro, physio, osteo etc and tried every supplement out there and yes peptides and sarms, i have even now stopped all exercise and nothing has improved. never have had a major injury but so much damage that any exercise i do could risk it. i tried to get back in the gym recently after 6 months of sleeping and eating and resting and within 6 week, i felt things going wrong in my body and this was from training low volume 1 x per fortnight so i can't even recover from that!
i have appointment with a endocrinologist coming up as a final check before i begin my own TRT dose of test trial. later in the year i will be going on HGH pending a payment approval and of course availability.
what you gotta need to realise is that we're not 18-25 year olds any more and that basic lifting should be the norm from now on and focus on mobility. should be most of what you do and only like 1 or 2 exercise per session. honestly i think at some point you have to forget about progression because it won't happen any more and be content with just doing pushups and doing same weights everyt session. forget about "hard training" you're just there to exercise now. no more "smashing it" and forget about getting huge and all that stuff. just maintain and smart training. less is more.
should be able to train your whole your body with 5-8 exercises total. you don't need leg extensions, tricep kickbacks, side lateral raises etc. i'll never train arms again because my elbows and tendons can't handle it.
so in conclusion, fuck peptides. get on GH, focus on mobility, basic minimalist training only whats absolutely necessary. stop doing bro splits. less is more.